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Cisco Bug: CSCsz21181 - High CPU when 4948 reload with a lot of VLAN configured as SPAN source

Last Modified

Jan 28, 2017

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

High CPU when 4948 reloads.
The high CPU causes link up delay.  The Link partner detects the link to be up , while the link on 4948 is still down . This results in partner start forwarding traffic and since the 4948 is down , it drops the traffic

Large number of VLAN is configured.
Large number of VLAN is configured as the SPAN source.
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